"The number of NAS cases is skyrocketing across the country, and some states like Tennessee have seen a 10-fold increase since 1999. Kentucky similarly reports a 11-fold increase in NAS cases between 2001 and 2011. This condition is a consequence of the nationwide opioid crisis that has been attracting so much recent attention from policymakers."
Read more here: http://policylab.chop.edu/blog/every-infant-counts-better-data-better-response-neonatal-abstinence-syndrome-pennsylvania